hips_doi = 10.26093/cds/aladin/2fr7-ef2 hips_initial_fov = 360.0 hips_initial_ra = 0.00833 hips_initial_dec = -20.00833 creator_did = ivo://CDS/P/ACT_Planck/DR4/f150 hips_pixel_bitpix = -64 data_pixel_bitpix = -64 hips_sampling = bilinear hips_overlay = mean hips_hierarchy = median hips_creator = Buga M. (CDS) hips_copyright = CNRS/Unistra obs_title = ACT_Planck DR4 f150 obs_collection = ACT_Planck DR4 f150 obs_description = The Atacama Cosmology Telescope (ACT) is a six-meter diameter telescope on Cerro Toco in the Atacama Desert of northern Chile (image above by Jon Ward). It is designed to make high-resolution measurements of the cosmic microwave background (CMB) temperature and polarization anisotropies and detect massive galaxy clusters via the thermal Sunyaev Zel'dovich (tSZ) effect. Reconstruction of the CMB lensing potential will play a key role in the cosmological detection of neutrino mass, and measuring the imprint of primordial gravitational waves in B-mode polarization could provide unique insights into the early universe and quantum nature of gravity. The majority of the DR4 products use data collected from 2013-16. DR4 also includes data collected from 2008-10. The second-generation, polarization-sensitive receiver ACTPol observed between 2013 and 2016. The four-year survey consists of 17,000 square degrees of the sky mapped at 98 and 150 GHz, with the deepest 600 square degrees at a noise < 10 uK-arcmin. #obs_ack = Acknowledgement mention prov_progenitor = https://lambda.gsfc.nasa.gov/product/act/actpol_prod_table.cfm bib_reference = 2020ApJ...903L..13M bib_reference_url = https://ui.adsabs.harvard.edu/abs/2020ApJ...903L..13M/abstract obs_copyright = LAMBDA HEASARC obs_copyright_url = https://lambda.gsfc.nasa.gov/ t_min = 54466.6 t_max = 57752.2 obs_regime = Radio client_category = Image/Radio/ACT/DR4 em_min = 0.00199861 em_max = 0.00199861 hips_builder = Aladin/HipsGen v11.037 hips_version = 1.4 hips_release_date = 2021-03-12T19:43Z hips_frame = equatorial hips_order = 4 hips_order_min = 0 hips_tile_width = 512 #hips_service_url = ex: http://yourHipsServer/act_planck_dr4.01_s08s16_AA_f150_night_map.fits hips_status = public master clonableOnce hips_tile_format = png fits hips_pixel_cut = -567.9 695.4 hips_data_range = -2486 2187 hips_pixel_scale = 0.007157 s_pixel_scale = 0.008333 dataproduct_type = cube hips_cube_depth = 3 hips_cube_firstframe = 1 data_cube_crpix3 = 1.0 data_cube_crval3 = 1.0 data_cube_cdelt3 = 1.0 data_cube_bunit3 = null moc_sky_fraction = 0.6719 hips_estsize = 17992980 hipsgen_date = 2021-03-12T19:38Z hipsgen_params = in=act_planck_dr4.01_s08s16_AA_f150_night_map.fits out=HiPS/ creator_did=CDS/P/ACT/DR4/150 verbose=4 BLANK=0 hips_creation_date = 2021-03-12T19:38Z